Sweeper



Feb. 4, 1947.

mtgl.. 28 26 L. B. SALT Ars1' AL svn-:Erm

Filed June 16, 1945 a sheets-sheet 1 Ptente combining with the c, ist? Lloyd B. Salt, Newton, and @errent E. fit

Hyde Park, Mass., assignors 'to E. h'. Startet `Company, Hyde Paris, Mass.

implication .lune 16, i945, Serial No. 599,852

a lcreams. icl. rames) This invention relates to sweepers having motor drivenbrushes."

It is generally recognized that for cleaning a rug well, the suction of the usual vacuum sweeperl is insucient since \it will not pick up hairs and threads which have become intertwined -upon the rug surface, and it has been customary to usebrushes or beaters having axes parallel to the rug surface, in the sweeper nozzles. Such de-y vices have added to the weight and complications of already heavy and complicated vacuum sweepers and have not been entirely satisfactory for that reason.

Another disadvantage of the usual vacuum I sweeper is that it has an external dust receiving bag which is unsightly, and which adds tol the.

bulk and inconvenience of the sweeper. g

This invention provides a small, inexpensive and easily handled sweeper which does not have a suction nozzle, and which has brushes rotating in a plane parallel to a rug surface for dislodging dust and other particles and for throwing same equally spaced fan blades, the disc by centrifugal force into an annular collection 4 chamber included in the sweeper housing.

A feature of the invention resides in the pro-A vision of the annular collection chamber above n and around the rotary brushes, the chamber hav'- ing a tangential incline over the upper surface of "which the dust and other particles are moved by the actionl of the brushes.

Another feature of the invention resides in brush structure, a centrif fugal fan which acts to draw air over the sweeper motor for cooling same, and which discharges the drawn in airlinto the dust stream entering the -collection chamber.

Anotherfeature of the invention resides in pro-A viding the sweeper with a removable cover which kforxnsthe cover upon removal Voi.' the cover,the sweeper can be.

turned over for dischargingthe; contents of the vclust collection chamber a's'by dum-ping the sweepings upon a paperspread for the dust chamber whereby uponthe iioor. Objects of the invention 'The invention will now be Fig.v 1 is a side elevation,vwith a portion' in dashed outline, of 'a sweeper embodying-'this invention;

Fig. 2 is a plan view looking downwardly upon are'to reduce the size, 'weight and costoi sweepers, and iso-improve their appearance and easel of handling. l

described with ref- -erence to the drawings Vof which: v

22 which extends vertically l I i chamber 2l. The partition `I9 has a portion 2l Fig. e is a sectio view along fthe lines --ft of Fig. 3;

Fig. 5 is an enlarged view or the entrance to the dust collection chamber of the sweeper, and

Fig. 6V is a plan view of the supporting disc of thesweeper, and illustrates the fan blades thereon.

The electric motor l@ lower end of which is attached the brush supporting disc l2. The brush holders i3 are supported in the radial slots ill have portions extending above the upper surface of the disc and which act as fan blades. The blade members l5 which are similar to the upper portions of the brush holders i3, are attached radially to the upper slu'face oi the disc l2, and provide with the upper portions of the holders l 3, l2 forming the back plate for the blades. v extend Idownwardly from the holders i3, through the central opening Hin the lower wall 68 of the sweeperl housing.

motor.v l0 'to the cylindrical side wall 29 of the sweeper housing. and forms the iioor of the dust collectionchamber 2l The cylindrical innerwall above the motor base. forms theinnerwall of the which extends downchamber 2l.'

The cylindrical side wall 20 of the sweeper has the `vertically arranged, spaced perforations 24 as illustrated by Figs. 1 and 5. The porous mem- -ber` 2 8 of cloth or other-'suitable material, extends around the chamber 2|, `against vthe inner surface of thewall 20,and provides with the perfora-A tions 24,1 passage teringthecharnber of-dustztherefrom.

The `.upper endsz-of'thewalls 20 and 22vhave I the Y"4i5 rubber tubular members 28 thereon and upon whi'chthe sweeper cover 21 it being rei l talnedsin position bythe hinged clamps 28. 'The cover 21 has the handle retaining'l portion 29to whichthe-Jhandle -lll is plvoted `and through which themotor lead wires 3| extend.

AThe lower surface of the cover'l'lhas the conventional female, electric plug receptacle A3? at- 'v tached thereto. and-'whichlis plugged-.onto the male plus 83 on the upper eml of the'n'iotor I Il.

' .The-electric energizing-circuito: the `mmm is completed through the wires 3l and they receptopof the brush has a shaft il, to the in the disc aa'nd sweeper cover`21, over `blades I3 and I5 draw .and forming an vcover extending over 2. A sweeper according to claim 1 in whichv tatie a2 and plus a: when the cover :i is clamped into position around the upper end or the motor I0. The rho- 36 therein around the lower tor base has the holes end of the motor.

The circular plate tion I9 and extends has the central opening 39 porting disc I2 a1 is attached to the parubelow the motor base, and

above the brush sup- The fan blades i3 and I5 upon rotation of the disc I2, move air through the holes 35 in the the surface of vthe motor, and through the holes 33 and opening 39, and blow the air into the collection chamber 2|. The air so moved cools the motor I0, and aids somewhat in the movement ofdust into the chamber 2 I.

In operation, upon rotation of the disc I2, and the movement of the sweeper over a rug surface, the brushes` I6 dislodge dust and other particles from 'the surface, and throw the particles outwardly by centrifugal force, the particles being forced .up the incline formed by the .Partition portion 23, vinto the chamber 2I. The-partition 40 extending between the walls 20 and 22 stops the whirling motion of the sweepings and causes them to build up in depth-in the chamber 2|, as

the sweeping progresses. At the Sametime, the air over the surface of the motor and discharge the airintothe dust stream entering the chamber 2I.

While one embodiment of the invention has been vdescribed for the purpose of illustration, it

should be understood that the invention is4 not limited to the exact apparatus and arrangement of apparatus illustrated, as modiiications thereof may be suggested by those skilled in the art without departure from the essenceof the invention.

What is claimed is:

1. A sweeper comprising a housing having an outer and a lower wall, 'said lower wall having an inner, circular opening therein, a motor supported in said housing above said opening, said motor having a shaft extending downwardly along the axis of said opening, brush supporting means attached to said shaft, brushes extending downwardly. from said supporting means into said opening, a partition extending around said motor and spaced from said outer wall, said parti-v and said outer wall forming therebetween Y tion a dust collection chamber, a second partition extending between said outer wall and said partition above said lower wall and forming the ioor of said chamber,said second partition havinga, portion extending downwardly to said lower w incline for the passage into said chamber of particles swept up by said brushes and thrown out therefrom by centrifugal force,

and a removable cover for said sweeper, said said chamber.

portedin said housing above said opening,

4extending over said a circular arc between said outer wall and said iirst mentioned partition,

3. A sweeper comprising a housing having an outer and a lower wall, said lower wall having an inner, circular opening therein, a motor supsaid motor having' a shaft extending downwardly along said lower wall and forming the floor of said Y chamber, said second partition having a portion extending downwardly to said lower wall and forming an incline 4for the passage intoA said chamber of particles swept up by said brushes and thrown out therefrom by centrifugal force, a removable cover for said sweeper, said cover chamber, means forming spaced, radially extending fan blades on the upper surface of said disc, a plate extending over said blades, said plate having an opening around said shaft for admitting air into the inner ends of said blades, said cover having openings therein abov'e said motor, and means including said openings in said cover and including said opening in said plate for passing air from the exterior of said sweeper over the surface of said motor and into said blades, the air discharged by said blades passing with the particles thrown out-'by iile of this patent:

UNITED STATES PATENTS Number Name Date 196,201 Downer Oct. 16, 1877 968,934 Goughnour Aug. 30, 1910 1,718,804 White June 25, 1929 1,480,662 Y Caine Jan. 15, 1924 2,224,202 Smellie Dec. 10, 1940 1,954,416 Leathers Apr, 10, 1934 1,305,242 Allen June v3, 1919 2,190,678 Replogle 1 Feb. 20, 1940 1,260,282 1 Harrold Mar. 19, 1918 435,935 'Knoche Sept. 9, 1890 1,673,333 Klumpp v. June 12, 1928 1,115,301 `liriberg Oct. 27,1914

FOREIGN PATENTS l I Number Country Date V157,618 Swiss 1 v 1932- 360,193

British f 1931 the axis of said opening, a brush support- .ing disc attached to said shaft, brushes extend- 

